Light Guide Plate Support Mechanism for Slim Bezel LCD
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Solution Overview
Problem
Conventional liquid crystal image display apparatuses face challenges in maintaining a slim bezel due to the expansion and contraction of light guide plates, which leads to luminance unevenness and requires wider bezels to accommodate securing pins, limiting the placement of LED elements and increasing bezel size.
Innovation Solution
The image display apparatus employs a pair of support mechanisms with movable components and elastic members that clamp the light guide plate at both sides, allowing for even expansion and contraction, eliminating the need for securing pins on the edges, thus enabling a slimmer bezel and uniform LED placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If securing pins are used to fix the light guide plate, then the light guide plate can be securely retained, but the bezel width increases and LED element placement is limited
Solution Approach 1:
The support mechanism employs a movable component that can shift position along the light guide plate's length. This dynamic adjustment allows the securing pin to maintain optimal engagement with the light guide plate while accommodating thermal expansion and contraction, thereby preventing bezel widening and enabling slimmer display designs
Solution Approach 2:
The elastic member changes the mechanical parameter of the support mechanism by providing adjustable pressure and position compensation. This allows the securing pin to adapt its location and force application, maintaining reliable retention without requiring excessive bezel width, thus enabling thinner bezel designs
2Temperature
If the light guide plate expands or contracts, then thermal expansion occurs, but luminance unevenness is caused
Solution Approach 1:
The movable component dynamically adjusts its position in response to thermal expansion or contraction of the light guide plate. This dynamic positioning ensures that the securing pin remains centered and properly engaged, preventing distortion of the light path and maintaining uniform luminance across the display
Solution Approach 2:
The elastic member provides self-adjusting pressure that automatically compensates for thermal expansion and contraction. The system serves itself by using the elastic force to maintain optimal engagement between the securing pin and light guide plate, preventing luminance unevenness without external intervention
3Length of stationary object
If a slimmer bezel is implemented, then display quality improves, but accommodating the support mechanism becomes difficult
Solution Approach 1:
The movable component allows the support mechanism to compact its footprint while maintaining functionality. By enabling position adjustment along the light guide plate, the mechanism can be integrated into thinner bezel designs without requiring additional space, thus reducing device complexity in the context of slim bezel constraints
Solution Approach 2:
The elastic member changes the operational parameters of the support mechanism, allowing it to function within reduced spatial constraints. This parameter adjustment enables the mechanism to maintain proper engagement and support functionality while accommodating slimmer bezel dimensions, effectively resolving the integration challenge
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration maintains the light guide plate's center position, prevents luminance unevenness, and allows for a more compact bezel design while ensuring even LED placement, enhancing the display's quality and aesthetics.
Implementation Method 1
an elastic member that pushes the movable component toward an opposite support mechanism
Data Source
AI summary
Image display apparatus includes liquid crystal cell, flat plate-shaped back frame, light guide plate, and a pair of support mechanisms. The pair of support mechanisms are fixed to back frame in positions at which light guide plate is clamped at both sides that intersect a first axis (X-axis). The pair of support mechanisms each includes movable component that supports light guide plate, body component that movably retains movable component, and elastic member that pushes movable component toward opposite support mechanism. Protrusion is disposed on movable component, and engagement section with which protrusion engages is disposed on light guide plate. Engagement section includes tab that is formed outwardly on an end surface of light guide plate, and notch disposed on tab and engages with protrusion.